A patient is bothered by the appearance of teeth #12 and #13, which show cervical decalcification. What is the diagnosis?

Correct answer: C. Enamel hypocalcification (white spot lesions)

• A. Dentinogenesis imperfecta produces opalescent blue-grey teeth with bulbous crowns and obliterated pulps.
• B. Amelogenesis imperfecta is a hereditary condition affecting the entire dentition.
• C. Correct. White, chalky cervical lesions localized to a few teeth represent hypocalcified enamel from a demineralization event — the earliest reversible stage of caries, commonly seen at plaque-stagnation areas or after orthodontic bracket removal.
• D. Fluorosis is symmetric and generalized across homologous teeth, not localized to two adjacent teeth.